Počet záznamů: 1

1H NMR study of temperature-induced phase separation in solutions of poly(N-isopropylmethacrylamide-co-acrylamide) copolymers

  1. 1.
    0343295 - UMCH-V 2011 RIV GB eng J - Článek v odborném periodiku
    Kouřilová, H. - Šťastná, J. - Hanyková, L. - Sedláková, Zdeňka - Spěváček, Jiří
    1H NMR study of temperature-induced phase separation in solutions of poly(N-isopropylmethacrylamide-co-acrylamide) copolymers.
    European Polymer Journal. Roč. 46, č. 6 (2010), s. 1299-1306 ISSN 0014-3057
    Grant CEP: GA ČR GA202/09/1281
    Výzkumný záměr: CEZ:AV0Z40500505
    Klíčová slova: phase-separation * poly(N-isopropylmethacrylamide) aqueous solution * poly(N-isopropylmethacrylamide-co-acrylamide) copolymer
    Kód oboru RIV: CD - Makromolekulární chemie
    Impakt faktor: 2.518, rok: 2010

    1H NMR spectroscopy was applied to investigate temperature-induced phase separation in solutions of poly(N-isopropylmethacrylamide-co-acrylamide) [P(IPMAm/AAm)] random copolymers in D2O, D2O/ethanol and D2O/acetone. For solutions of the copolymers with the AAm fraction not exceeding 16 mol% 1H NMR spectra show dynamic heterogeneity of copolymer chains in mesoglobules where AAm sequences and surrounding IPMAm sequences are hydrated and mobile, while other IPMAm sequences are dehydrated and their mobility is strongly reduced. The obtained results are consistent with the idea that P(IPMAm/AAm) copolymer mesoglobules are rather porous and disordered.
    Trvalý link: http://hdl.handle.net/11104/0005905